Arsenic biotransformation potential of six marine diatom species: effect of temperature and salinity.

ABSTRACT: Temperature and salinity effects on marine diatom species growth has been studied extensively; however, their effect on arsenic (As) biotransformation has been imprecise. This study reports the growth, and As biotransformation and speciation patterns at various temperatures and salinities of six marine diatom species: Asteroplanus karianus, Thalassionema nitzschioides, Nitzschia longissima, Skeletonema sp., Ditylum brightwellii, and Chaetoceros didymus. The growth rate and As biotransformation potentials of these species during three weeks of culture in f/2 based medium were significantly affected by wide temperature (0-35?°C) and salinity (0.3-50‰) ranges. Growth and As biotransformation were higher at optimum temperatures of 10-25?°C, and salinity of 10-35‰, whereas growth and arsenic biotransformation were lower at <5?°C and 5‰ and >25?°C and 35‰, respectively. The results showed that As(V) to As(III) biotransformation differed significantly (p?

SUBMITTER: Papry RI 

PROVIDER: S-EPMC6629621 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature